Oil burner



Fw. 3, 1931. R. J. ROBERTS l OIL BURNER Filed Nov, 2, 192'? 2 Sheets-Sheet l Mmmm @Mg Feb. 3, 1931. R. J. ROBERTS OIL BURNER Filed Nov. 2, 1927 2 Sheets-Sheet .2

attente/19d Patented Feb. 3, 1931 RANEY J. ROBERTS, 03F DETROIT, `:MICHIGAN OIL BURNER -App1icationled November 2, 1927. Serial No. 230,468.

The present invention pertains to a novel oil burner of the general type used for heating purposes in habitable buildings.

The principal object of the invention is to provide a device of this character equipped with a dependable pilot light. Still another object is to provide an oil drainage system which will function promptly and effectively as soon as the oil ceases to ignite.

In the accomplishment of these objects I provide one or more branches which carry the oil to the bowl. ln each branch is mount- 4ed a wick which has one end extending into the bowl. The wick is either spaced from the inner wall of the branchy or formed with an axial passage, or both, in order to permit direct iow of oil to the bowl, rather than by capillary action entirely, when the device is functioning in the normal manner. When the supply of oil is cut oil for extinguishing the burner, a considerable quantity of oil remains in the branch which contains the wick.

This residue rises in the wick by capillary action and burns at the end which is positioned within the bowl, thereby maintaining a pilot light.

For the purpose of proper distribution, of the oil around the bowl, the latter is lformed with concentric grooves into which the wicks are extended. The oil issuing from the wicks i's thus promptly distributed in a circular path around the center of the bowl. A drain pipe leads from a lower level of the bowl so that the oil will not be permitted to accumulate in the burner in case the same should accidentally become extinguished.

Still another object of the invention is to provide a whirling means for the air which enters the burner in order that such air may be intimately mixed with the oil.

The invention is fully disclosed byway of example in the following descriptipn and in the accompanying drawing, in which- Figure 1 is a vertical section of a burner constructed according to theinvention;

Fig. 2 is a bottom plan view of the distributor cap;

Fig. 3 is a fragmentary vertical section thereof, showing one of the vanes in eleva- 50 tion;

Fig. 4 is a plan view of the burner;

Fig. 5 is a section on the line 5-5 of F igure 4;

Fig. 6 is a section on the line 6-6 of Figure 4; and

Fig. 7 is a vertical section of one of the su porting legs.

eference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

The burner rests upon a base 1 and is supported thereon by extensible legs of the character shown in Figures 1 and 7. Two such legs are provided for engaging the burner at diametrically opposite points thereof. Each such leg includes a lower section 2 having a foot 3 secured to the base by a bolt 4; The bolt is preferably received in a slot-'5 cut in the foot for the purpose of rapid assembly. Each leg also includes an adjustable section 6 having its lower end secured to the section 2 by a bolt `7 received in a slot 8 cut longitudinally in the section 2. A bowl base 9 is secured to the upper ends of the members 6 by bolts 10, and the upper ends of the members 6 are preferably'slotted as at 11 for rapid assembly of the bolts 10 thereto as at the slot 5 of the foot 3.

The member 9 has a central boss 12 which forms the air inlet 13. The lower edge of the boss is rabbeted externally at 14 for the attachment of an air supply pipe 1 5 leading from a suitable source such as a blower. y The 'loor 16 of the base member 9 slopes downwardly towards the boss 12 as clearly shown in Figure 1 and is formed with a circular groove 17 which is concentric with the inlet 13. To the uper end of the boss 12 is secured an air distributor cap 18 having its wall comprised of spaced curved vanes 19 whichiorm between them passages 20 leading from the int-erio'of the cap to the bowl in a direction which somewhat merges into a circular path, whereby the air issuing through these spaces is given a whirling motion. The lower ends of the vanes are notched as at 19 for receiving the upper end of the boss 12 in such a manner that the cap is centered thereon. The bowl is completed by a wall member 21 sesupply pipe 22 having two branches 23 entering the bowl at diametrically opposite points thereof and preferably at the groove 17. ylhe branches stand vertically as shown in lFigure 5 and contain each a wick 24C. The

wick is spaced as at 25 from the inner wall of the branch and is also formed with an axial passage 26 whereby the oil may ow directly through the branch notwithstanding the presence of the wick therein. Either Ythe space 25 or the passage 26 may be dispensed with in keeping with this object. The wicks have their upper ends disposed within the bowl, and due to the fact that the inlet branches enter at the groove 17, these ends lie substantially in the grooves. Finally, a drain pipe 27 leads from the door 16 of the base member 9.

ln the normal operation of the device oil is caused to dow directly through the space 25 and passage 26 through which it is discharged into the circular groove 17 and distributed therein. Due to this distribution oil the oil around the center of the burner, the combustion is spread uniformly throughout the device rather than concentrated in any given restricted area. The air which is forced through the pipe 15 is impartedawhirlingmotion between the vanes 19 in the manner already described, whereby a thorough commingling of air and oil is effected. When the burner is extinguished, there remains a quantity oi oil standing in the branches 23 and absorbed inthe wicks 24. Yllhis residue continues to burn at the upper ends el the wicks, and the small flames produced in this manner constitute pilot lights. When the supply of oil is resumed it will be promptly directed by the groove 17 to these burning ends, and

- combustion will promptly follow. Flooding of the burner through interrupted or improper combustion is avoided by drainage through the pipe 27.

Although a specic embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope ot the invention as indicated by the appended claims.

l. ln an oil burner, a bowl, an air pipe leading to the center thereof7 and a distributor cap mounted on the outlet end ot said pipe, said cap having a lateral wall consisting of spaced vanes and having a top piece covering said lateral wall.

2. lin an oil burner, a bowl, an air pipe leading to the center thereof, anda distributor cap mounted on the outlet end of said pipe, said cap having a lateral wall consist- 1,

ing of spaced curved vanes forming spaces which provide paths from. the interior ot the avenant ln testimony whereof l aiiX my signature.

RANEY J. ROBERTS.

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